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by dredmorbius
3325 days ago
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Though any carbon feedstock can address that. For a materials standpoint, there are substitutes. Natural gas as feedstock to the Haber-Bosch process and coking coal in steel production, for reducing ore, are both much more formidable. They account for a large fraction the consumption of both (15% in the case of coal), and substitutes are difficult. The story of where Earth's crustal iron comes from, when, and how, particularly as banded iron formations, is another interesting story. https://ello.co/dredmorbius/post/5l_8MqtVwLLvX_DabPjY-g |
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